Today the Virtual Earth Team announced they successfully published their biggest update to the Virtual Earth platform yet - running at 26 terabytes! That is quite a bit of data to publish to the web. This update brings expanded aerial imagery and textured 3D buildings/cityscapes to new cities (full list on the Virtual Earth Team’s blog).

It also brings a new feature to Virtual Earth which also powers Live Search Maps: “hill shades”. The hill shading feature allows the user viewing a road-style map to convey elevation on the maps.

The above screenshot is of Mt. St. Helens in Washington State on Live Search Maps. You can see the shading effects allow you to get an idea of elevation. Hill shading is the term the Virtual Earth Team is using but I’m not entirely sure if that is the official name for this feature.

I’ve relied heavily on Live Search Maps most of this year during my travels and also when I drive up to Redmond from Portland. I continue to use Live Search Maps for most of my mapping needs.

Google Earth is an interesting tool for looking at various places in the world that you haven’t visited yet. It’s true that some pictures are clearer than others, depending on the country and frankly, nobody would expect to see a picture of a village in Somalia as clear as the one of the Eiffel Tower.

But nobody would expect to see what a policy analyst discovered one day while making his regular checks of the maps: a top secret Chinese nuclear submarine. The Jin-class submarine is the largest and most recent development
in the Chinese navy and it’s still a classified project.

Hans Kristensen, director of the Federation of American Scientists’ Nuclear Information Project made the discovery and the picture was taken by DigitalGlobe’s Quickbird satellite, while looking at China’s Xiaopingdao submarine base near Dalian.

He confirmed that China has made important progresses with this project, which has the ultimate goal of developing a stealth nuclear-powered submarine and admits that commercial satellite imagery is an important aspect in international security.

Now don’t expect the Pentagon to be using Google Earth to track down enemy or friendly…